I was navigating on my Ubuntu 12.10 64bit box through Windows WinSCP with root user and suddenly pressed "delete" "enter" when I was on usr directory. I immediately cancelled the delete process and the mess was already done. I got no python3 interpreter:

-bash: /usr/lib/command-not-found: /usr/bin/python3: invalid interpreter: File or directory not found.

Please, don't say reinstall your system or boot a LiveCD. I can't use dpkg or apt-get to reinstall the packages.

Any ideas?

  • 1
    "I can't use dpkg or apt-get to reinstall the packages." That deserves some explanation, don't you think? If those have been destroyed by this action then the question changes to "How to rtestore dpkg and apt-get". Jun 6, 2013 at 2:12
  • This type of question has been asked and answered several times, in several of the SE groups. Have you not researched the archives to come to the proper conclusion which you want nobody to say?
    – mdpc
    Jun 6, 2013 at 2:53
  • I can't use dpkg or apt-get because them throw the same damn error. Jun 6, 2013 at 3:13
  • I searched, and none helped. Seems my problem is a little different, because people without python working was still able to apt-get install --reinstall python3 and I can't. I even downloaded the deb's from packages.ubuntu.com but no avail. Jun 6, 2013 at 3:14
  • 3
    You didn't delete python ONLY. You deleted a LOT of stuff. And you failed to keep backups. Sorry that you don't like the answer, but the answer is that you reinstall. Jun 6, 2013 at 3:32

1 Answer 1


You don't necessarily have to reinstall your system, IF you have good backups.....You can restore the missing directories from your fine backups!

Otherwise.....you'll have to re-(can't say according to the questioner)...

  • IF. I don't have any backups at all. Jun 6, 2013 at 3:28
  • 1
    Re: Proper Backups. Which, in my less than humble opinion, is part of what separates professional IT from Hobbyist.
    – Magellan
    Jun 6, 2013 at 4:36

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